43421131342 has 4 divisors (see below), whose sum is σ = 65131697016. Its totient is φ = 21710565670.

The previous prime is 43421131333. The next prime is 43421131393. The reversal of 43421131342 is 24313112434.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 43421131342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10855282834 + ... + 10855282837.

It is an arithmetic number, because the mean of its divisors is an integer number (16282924254).

Almost surely, 2^43421131342 is an apocalyptic number.

43421131342 is a deficient number, since it is larger than the sum of its proper divisors (21710565674).

43421131342 is a wasteful number, since it uses less digits than its factorization.

43421131342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21710565673.

The product of its digits is 6912, while the sum is 28.

Adding to 43421131342 its reverse (24313112434), we get a palindrome (67734243776).

The spelling of 43421131342 in words is "forty-three billion, four hundred twenty-one million, one hundred thirty-one thousand, three hundred forty-two".